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Answer i dont even know im just putting this cus id ont care
Explanation:
I think it's The fossil record. The same animal fossil is in Africa and South America. The animal could have not swim across so its the fossil record
We use the equation of motion for vertical component,
Here, 
is displacement of bullet, 
is vertical initial velocity of bullet which is equal to zero because bullet was fired horizontally, and t is time of flight.
Therefore,
Given, 
Substituting the values, we get time of flight
For the first one, leaves is matter.
for the second one, ability to react
hope this helps
